Listen, I love Stitch as much as the next gal. Seriously, the only Disney merchandise I give two shits about is the one with Stitch on it.
But both as someone who's practically an elder of the Trolls fandom and who knows what she's talking about, I can objectively say Poppy would crush the competition in a dance battle.
Don't y'all know nothing about the franchise? The trolls literally live to sing and dance (and hug, though that's mostly the Pop Trolls). In fact, musical talent is so ingrained in them, other species can try to literally siphon it out of them to become better performers themselves (hello, Velvet and Veneer from Trolls Band Together. How are you doing?).
So, sorry, Stitch, baby. You know I love you, but this time I'm with the hyperactive, overly optimistic ball of pink sunshine.